Washington (CNN)A group of Republican senators on Sunday night released a version of President Donald Trump's immigration proposal ahead of a floor debate on immigration this week.

The proposal is expected to be one of several amendments the Senate will consider this week as it debates immigration. Senate Majority Leader Mitch McConnell has used a bill unrelated to immigration as the starting point for the debate, which will allow senators to offer proposals that can compete for 60 votes to advance.

The bill from Republican Sens. Chuck Grassley, John Cornyn, James Lankford, Thom Tillis, David Perdue, Tom Cotton and Joni Ernst largely resembles what Trump has proposed.

At its base is still a resolution for the Deferred Action for Childhood Arrivals program, which has protected young undocumented immigrants brought to the US as children from deportation. Trump has decided to terminate the Obama-era program.

The White House proposal offered a pathway to citizenship for 1.8 million eligible immigrants, more than the 800,000 of whom registered for DACA in the five years of the program. In exchange, the White House sought upwards of $25 billion for border security and a wall, a number of changes to laws to make it easier to deport and detain immigrants, a substantial cut to legal immigration based on family relationships and an end to the diversity visa lottery.

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The Grassley bill essentially makes those bullet points a reality, including the proposals that would toughen immigration enforcement and limiting family-based visas only to spouses and children under 18 years old -- a vastly reduced number of eligible immigrants from the current system.

As proposed by the White House, the cuts to the family system and diversity lottery would be used to allow in the 4 million to 5 million immigrants already waiting years -- and in some cases decades -- in the backlog for visas. Cuts to yearly visas would only occur after that backlog is cleared, allowing Congress time to make reforms, the lawmakers said.

The bill is not expected to have 60 votes in support of it, the threshold required to advance legislation in the Senate. Democrats have uniformly objected to the cuts to family migration and have issues with the ending of the diversity visa without another way to support immigrants from countries that are otherwise underrepresented in immigration to the US. The so-called reforms to current immigration laws also face steep opposition.